diff options
Diffstat (limited to 'arch/x86/kernel/traps_32.c')
| -rw-r--r-- | arch/x86/kernel/traps_32.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c index 65791ca2824..471e694d671 100644 --- a/arch/x86/kernel/traps_32.c +++ b/arch/x86/kernel/traps_32.c @@ -681,7 +681,7 @@ gp_in_kernel: } } -static __kprobes void +static notrace __kprobes void mem_parity_error(unsigned char reason, struct pt_regs *regs) { printk(KERN_EMERG @@ -707,7 +707,7 @@ mem_parity_error(unsigned char reason, struct pt_regs *regs) clear_mem_error(reason); } -static __kprobes void +static notrace __kprobes void io_check_error(unsigned char reason, struct pt_regs *regs) { unsigned long i; @@ -727,7 +727,7 @@ io_check_error(unsigned char reason, struct pt_regs *regs) outb(reason, 0x61); } -static __kprobes void +static notrace __kprobes void unknown_nmi_error(unsigned char reason, struct pt_regs *regs) { if (notify_die(DIE_NMIUNKNOWN, "nmi", regs, reason, 2, SIGINT) == NOTIFY_STOP) @@ -755,7 +755,7 @@ unknown_nmi_error(unsigned char reason, struct pt_regs *regs) static DEFINE_SPINLOCK(nmi_print_lock); -void __kprobes die_nmi(struct pt_regs *regs, const char *msg) +void notrace __kprobes die_nmi(struct pt_regs *regs, const char *msg) { if (notify_die(DIE_NMIWATCHDOG, msg, regs, 0, 2, SIGINT) == NOTIFY_STOP) return; @@ -786,7 +786,7 @@ void __kprobes die_nmi(struct pt_regs *regs, const char *msg) do_exit(SIGSEGV); } -static __kprobes void default_do_nmi(struct pt_regs *regs) +static notrace __kprobes void default_do_nmi(struct pt_regs *regs) { unsigned char reason = 0; @@ -828,7 +828,7 @@ static __kprobes void default_do_nmi(struct pt_regs *regs) static int ignore_nmis; -__kprobes void do_nmi(struct pt_regs *regs, long error_code) +notrace __kprobes void do_nmi(struct pt_regs *regs, long error_code) { int cpu; @@ -1148,9 +1148,22 @@ asmlinkage void math_state_restore(void) struct thread_info *thread = current_thread_info(); struct task_struct *tsk = thread->task; + if (!tsk_used_math(tsk)) { + local_irq_enable(); + /* + * does a slab alloc which can sleep + */ + if (init_fpu(tsk)) { + /* + * ran out of memory! + */ + do_group_exit(SIGKILL); + return; + } + local_irq_disable(); + } + clts(); /* Allow maths ops (or we recurse) */ - if (!tsk_used_math(tsk)) - init_fpu(tsk); restore_fpu(tsk); thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */ tsk->fpu_counter++; @@ -1208,11 +1221,6 @@ void __init trap_init(void) #endif set_trap_gate(19, &simd_coprocessor_error); - /* - * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned. - * Generate a build-time error if the alignment is wrong. - */ - BUILD_BUG_ON(offsetof(struct task_struct, thread.i387.fxsave) & 15); if (cpu_has_fxsr) { printk(KERN_INFO "Enabling fast FPU save and restore... "); set_in_cr4(X86_CR4_OSFXSR); @@ -1233,6 +1241,7 @@ void __init trap_init(void) set_bit(SYSCALL_VECTOR, used_vectors); + init_thread_xstate(); /* * Should be a barrier for any external CPU state: */ |